Improvement in machines for separating middlings



A. A. N. WOLF. Machine for Separating Midd1ngs,&o.

Patented pril 8,1879.

UNITED STATES PATENT OEEIGE.

AUGUSTUS WOLF AND ABRAHAM N. WOLF, OF ALLENTOWN; SAID A. N. WOLFEASSIGNOR TO SAID AUGUSTUS WOLF AND DAVID L. HAMAKER, OF EAST HEMPFIELD TOWNSHIP, LANCASTER COUNTY, PA.

lMPROVEMENT IN MACHINES FOR SEPARATING MIDDLINGS, Sac.

Specification forming part of Letters Patent No. 214.073, dated April 8, 1879; applicationfiled v l January 24, 1879.

To all whom it mary concern.-

Be it lrnown that we, AUGUSTUS WOLF and ABRAHAM N. WoLr, of Allentown, in the county of Lehigh and State of Pennsylvania, have-invented certain Improvements in Machines for SeparatingMiddlings, 8vo., of which the following is a specification.

This invention relates to that cla-ss of maon the one hand and ne'iiour on the other in which suction orblastis employedby means of a fan-or blower. l

lhe novelty consists in the simultaneous reciprocatory shaking movement imparted to an upper and lower combined sieverframe and receiver attachment, said frame's 'carrying the several sievesbein g ,provided with adjustable cord-heaters or whippers, which act against the underside of the bolting cloth on the sieve-frames, andl minor improvements, herein more fully set forth.V

The accompanying drawings, with letteis of reference marked thereon,- and a brief description, .will enable those skilled in the art to make anduse the same.

Figure 1 is a perspective view of one side and front end of the machine, with the two side'doors removed and the upper sieve lifted out to show the interior arrangement. Fig. 2 shows the outside of the other or rear end. Fig. 3 Vis to represent a longitudinal plan view, the frame being removed; Fig. 4, a vertical sect-ionv in front, with the fan removed to show the several discharge-openings. Fig. 5 is a perspective view of the', upper sieve removed. Short uprights T on each side in the lower section of the cross-pieces A' A" are usedfor pivot-fastenin gs, on which the ceutralportion of `an elbow-lever, N, imparts an oscillating or shaking motion'to two frames, C' G. These frames are connected to the ends of said elbow-levers by a pin at two points on each side, respectively. The lowerframe, C', is connected, by rigid pitmen P, with an eccentric or crank attachment made in the shaft or-spindle J of the fan 'tucased at K, driven by any gear or power by connecting it with the strappulley I. These coupled frames have air and vibrating spaces between their ends and the ends of the box which incloses `them, and are jointly I supported parallel with each other on theoscillating lever-arms N. On the lower edge of these frames and rounded end pieces thereis shown 4a sheet-metal concave receiver, LL', having a cross-section `of nearly half a circle. There is also a cross-piece or cord-holder, l), extending from one side to the other at one end,towhich three or more cords, E, are af-v fixed and carried through slots to the outside chines for separating middlings from the bran of the case or box, and connected with rollers F F', for tightening the cords. A pawl and ratchet may be applied to hold them in the adjustment made. rIhese are reversed in position, as shown, and tend to elevate the closed endof the sieves G G'. Fig. 5 shows one of 131.656, slaves and its positionwhen set into the upper frame, C. ,Said sieve G has a raised edge along the two sides and across the back, the other end beingopen, the cross-piece joining the two sides being beneath the boltingcloth, so that the coarser matter on the sieve passes unobstructed through aslot in the outer frame, G, andfalls downl upon the lower sieve, G', made in the same manner as the one shown. Each has a bridge-piece, H H', centrally on top of the frame to strengthen it, under which space is left for the matter to pass under it freely.

The ner our sifted through the upper and finer meshes of the bolting-cloth drops down into the receiver L, and discharges through a tube atO into a suitable receiver or ,conveye'r' on the outside. AThe material now passes 'over-y the lower sieve, G', which separates the mid. dlings .from the bran. These middlings are discharged from the receiver L' through a central end opening, R, Fig. 4, while the tailings pass from the open end of the sieve into an oblique spout in Q, and discharge on one side at S. Adjusting-valves W may also be made in the receiver L' The ground wheat is -fed in through the top of the box A at one end by the ordinary tube or hopper B, and falls upon a deiiecting device, b, on the inside, to distribute it over the front part of the sieve G.- The fan-case K has an-adjusting-valve, V. The air is discharged at M, and circulates under, through, and over the sieves, and finds ingress chiedy through the end Opening in the receiver L.

The suction-blast may be made to act in the direction of the arrow, Fig. 3, and, together with the whipping-cords or cleaners E, is so readily adjusted as to cause the material to bounce up more or less forcibly, as the open end of each sieve rests ou the crosspiece D only, und the other end is more or less elevated hy the tension of the cords, which are also on top of the crosspiece, so that; the cords are in close contact with the cloth ou the frame of the sieve, which is otherwise disconnected with the oner frames, C, in which they fit and A'receive their reciprocamry shaking motion aforesaid.

Wha we claim is- 1. The combination of frames C C', sieves G G', concave receivers L L', elbow-levers N,

purpose set forth.

AUGUSTUS WOLF. A. N. WOLF. Witnesses:

J. F. WEINCHEIMER, HENRY T. KLECKNER. 

